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CVE-2026-115505

CVE-2026-115505 · libsmb2 before 6.3 Integer Overflow in DCE/RPC NDR Decoder via NetrShareEnum

This page contains facts from public vulnerability sources. Check the original advisory before updating.

libsmb2 before 6.3 contains integer overflow vulnerabilities in the DCE/RPC NDR decoder in lib/dcerpc.c that allow heap out-of-bounds reads and writes. A malicious SMB server or machine-in-the-middle on unsigned connections can send crafted NetrShareEnum replies with wrapping actual_count or max_count values when clients call smb2_share_enum_async(), corrupting heap memory.

CVSS 7.2 · High · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • libsmb2

    Versions
    • ≥ 0, < 6.3: Affected (custom)

    Update to 6.3

  • libsmb2 Debian:13

    Versions
    • 6.2+dfsg-2
    • 6.2+dfsg-2+deb13u1
    • 6.2+dfsg-3
    • 6.2+dfsg-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libsmb2 Debian:14

    Versions
    • 6.2+dfsg-2
    • 6.2+dfsg-3
    • 6.2+dfsg-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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